Unit5BeGreenLesson3（课件）英语新教材北师大版八年级下册

（北师大版）八年级下Unit5BeGreenLesson3WhatIsYourWaterFootprint?Leadin01Pre-reading02While-reading030405060708Post-readingFocusonLanguageExpressyourselfHomeworkGrammar掌握核心词汇：waterfootprint,recycle,shortage,reduce,relativeclause等，理解并能运用节水相关短语。掌握关系从句（Relativeclauses）的基本用法：用which/that指代事物，用who/whom指代人，理解其修饰名词。理解“水足迹”的定义、重要性，掌握课文中减少水足迹的方法与逻辑。Leadin

01Whendoyouusewaterindailylife?IusewaterwhenItakeashower.IusewaterwhenIwashvegetablesandcookmeals.Pre-reading02ActivateandShareActivity1Whendoyouusewater?Howcanyousavewater?Talkwithapartner.Usetheideasbelowtohelpyou.We'lltalkaboutasuperimportantthinginourlife—water!ActivateandShareIusewaterwhenIbrushmyteeth.Activity1Whendoyouusewater?Howcanyousavewater?Talkwithapartner.Usetheideasbelowtohelpyou.IusewaterwhenIwashmycar.ActivateandShareActivity1Whendoyouusewater?Howcanyousavewater?Talkwithapartner.Usetheideasbelowtohelpyou.序号用水场景（Whendoyouusewater?）节水方法（Howcanyousavewater?）1IusewaterwhenItakeashower.Takeshortshowersinsteadofbaths.2IusewaterwhenIwashmycar.Washyourcaratacarwashthatrecycleswater.3IusewaterwhenIdolaundry.Fillyourwashingmachineupbeforewashing.4IusewaterwhenIwashfruitandvegetables.Washfruitandvegetablesinabasinofwater.5IusewaterwhenIbrushmyteeth.Turnthetapoffwhilebrushingyourteeth.6IusewaterwhenIwaterplants.Collectrainwatertowaterplants.While-reading03ReadandUnderstandActivity2Youaregoingtoreadatextaboutwaterfootprint.Whatdoyouthinkaperson’swaterfootprintis?Choosefromtheoptions(A–C).AthestepsyoutaketosavewaterByourdailyuseofwaterCtherecordofwateryouwastedReadandUnderstandWhatdoyouthinkthepassagewilltalkabout?Activity3ReadthetextandcheckyouranswertoActivity2.Whydoesourwaterfootprintmatter?Whatcanwedotoreduceit?Thepassagewilltalkaboutwhatwaterfootprintis,whyitisimportant,andhowwecanreduceit.ReadandUnderstandWhatiswaterfootprint?Activity3ReadthetextandcheckyouranswertoActivity2.Whydoesourwaterfootprintmatter?Whatcanwedotoreduceit?Ithinkwaterfootprintistheamountofwaterweuseeveryday,likethewaterwedrink,takeashowerandwashclothes.ReadandUnderstandHowtoreduceit?Activity3ReadthetextandcheckyouranswertoActivity2.Whydoesourwaterfootprintmatter?Whatcanwedotoreduceit?Wecantakeshortshowers,turnoffthetapwhenwebrushteeth,andnotwastewater.ReadandUnderstandWhyisitimportant?Activity3ReadthetextandcheckyouranswertoActivity2.Whydoesourwaterfootprintmatter?Whatcanwedotoreduceit?Becausethereisnotenoughcleanwaterintheworld.Ifweusetoomuchwater,manypeoplewillhavenowatertodrink.Activity4Whatideasandexamplesdoesthetextgiveaboutreducingthesizeofourwaterfootprint?Readagainandcompletethetable.ReadandUnderstandIdeasReasonsoractionsneverbuymorefoodthanyouneedanddon'twasteit•Ithelpssavewaterbecauseweneedalotofittogrow,cleanandcookfood.changethewayyouusewater•Takeshortshowersinsteadofbaths.•Turnthetapoffwhileyou'rebrushingyourteeth.•Collectthewaterafteryouwashrice,fruitandvegetables,thenuseittowaterplantsordootherthings.choosewisely•Findoutthetypesoffood,clothesandotherproductsthatneedalotofwatertoproduce,thenmakecarefulchoices.Activity5Ingroups,preparealistofquestionsonwhyandhowweshouldreducethesizeofwaterfootprint.Then,oneasksquestionsandtheothersanswer.UseyournotesinActivity4tohelpyou.ReadandUnderstand1.Whyshouldwereduceourwaterfootprint?Becausethereisaseriouswatershortageintheworld.Thereisn'tenoughcleanwaterforeveryone,and2.2billionpeoplelivewithoutsafedrinkingwater.Wastingwatermakestheproblemworse.2.Whydoesourwaterfootprintmatter?Becauseofglobalwatershortages.Manypeoplelacksafedrinkingwater,andwaterwastemakesthesituationmoreserious.3.Whatproblemswillwefaceifwedon'treduceourwaterfootprint?Thewatershortageproblemwillbecomeworse,andmorepeoplewillnothaveenoughcleanwatertouse.Activity5Ingroups,preparealistofquestionsonwhyandhowweshouldreducethesizeofwaterfootprint.Then,oneasksquestionsandtheothersanswer.UseyournotesinActivity4tohelpyou.ReadandUnderstand4.Whatsimplechangescanwemaketoourlifestyletoreduceourwaterfootprint?Wecanneverbuymorefoodthanweneedandnotwasteit,changethewayweusewater,collectandreusewater,andchooseproductswisely.5.Howcanwesavewaterwhenwetakeashowerorbrushourteeth?Wecantakeshortshowersinsteadofbaths,andturnthetapoffwhilewearebrushingourteeth.6.Whatcanwedowiththewaterafterwashingrice,fruitandvegetables?Wecancollectitanduseittowaterplantsordootherthings.Post-reading04Activity6AnalyseandAppreciateWhatisthepurposeofthetext:toinform,toargue,toinstructortoentertain?Howdoesthewriterachievethepurpose?Thereismorethanoneoptionbelow.ReadandExploreAtoaddressthereaderdirectlyBtofocusonadifferentpointineachparagraphCtosupporttheideaswithpersonalexperiencesDtoconnecteachpointbyansweringwhat,why,howquestions?Activity7ThinkandShareWhatwillyoudotoreducethesizeofyourwaterfootprint?Discussingroupsandthenpresentyourideasinclass.ThinkandShareIwilltakeshortshowersinsteadofbathstosavewater.IwillturnoffthetapwhenIbrushmyteeth.IwillneverbuymorefoodthanIneedandwon'twastefood.Iwillcollectthewaterafterwashingricetowaterplants.Iwillchooseproductsthatneedlesswatertoproduce.

FocusonLanguage05VocabularyinuseActivity8Completethetextaboutsavingwaterwiththecorrectformoftheexpressionsinthebox.•buymorethanyouneed•needalotofwatertogrow•waterplants•makecarefulchoices•collectthewater•turnthetapoffIfyouwanttosavewaterathome,youcantakeshortshowersand1____________whileyou’renotusingit.Youcanalso2_________________afteryouwashrice,fruitandvegetablesanduseitto3_____________.Butyourwaterfootprintismorethanthewateryoudrink,cookwithorwashwith.Theclothesyouweararepartofittoo!

turnthetapoffcollectthewaterwaterplantsVocabularyinuseForexample,doyouwearbluejeans?Peoplemakejeansfromcotton,andcotton4______________________________.Wateringthecottonplantsmakesup92%ofthewaterfootprintofapairofjeans!Peoplealsoneedtoaddaspecialcolourtomakeitblue.Thisprocessusesalotofwater,andsomepeopleoftenletthedirtywaterflowawayintotheenvironment.Thiscauseswaterpollution.So5______________________whenyou’reshoppingforclothes.Never6______________________________.needsalotofwatertogrowmakecarefulchoicesbuymorethanyouneedActivity8Completethetextaboutsavingwaterwiththecorrectformoftheexpressionsinthebox.Grammar06一、定义（Definition）关系从句（RelativeClause），也叫定语从句，是在句子中用来修饰名词/名词短语（我们称这个被修饰的名词为「先行词」）的从句。它的核心作用是：给先行词补充额外的、更具体的信息，让句子表达更完整、更精准，相当于一个「后置的形容词」。GrammarDiscoveryRelativeclauses(1)(关系从句)结构公式主句（含先行词）+关系词+关系从句（补充信息）二、核心用法（Usage）（1）先行词指「事物」时可用关系词：which/that（初中阶段绝大多数情况可互换）作用：在从句中作主语或宾语，指代先行词（事物）thewaterthatpeopleneedtomakeyourclothes（that在从句中作need的宾语）2）先行词指「人」时可用关系词：who/whom/thatwho：可在从句中作主语或宾语whom：只能在从句中作宾语that：可作主语/宾语，口语常用，可替代who/whom补充例句（贴合本课主题）：Thepeoplewho/thatsavewatercanreducetheirwaterfootprint.（who/that作主语，指代people）GrammarDiscovery现在完成时（PresentPerfectTense）GrammarDiscoveryActivity9Wecanuseaclauseastheobjectofasentence.Studythesentencescarefully.Circletheconnectingwordsandunderlinetheobjectclauseineachone.Then,completetheMyDiscoverybox.1.Yourwaterfootprintisnotjusttheamountofwaterwhichyoudrinkorwashwith.2.Yourwaterfootprintincludeseverythingrelatedtowater,eventhewaterthatpeopleneedtomakeyourclothes.3.Findoutthetypesoffood,clothesandotherproductsthatneedalotofwatertoproduce.先行词（被修饰的名词）+关系代词（which/that）+定语从句（补充先行词的信息）GrammarDiscoveryActivity9Wecanuseaclauseastheobjectofasentence.Studythesentencescarefully.Circletheconnectingwordsandunderlinetheobjectclauseineachone.Then,completetheMyDiscoverybox.anoun/anounphrasewho/whom/thatwhich/that07ExpressyourselfActivity10SpeakingWhatotherkindsoffootprintcanyouthinkof,e.g.energyfootprintandcarbonfootprint?Whatdoesitmeanandhowcanyoureduceit?WritingandSpeaking